Patents by Inventor Yongnian GAO

Yongnian GAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220282044
    Abstract: The present invention discloses a polymerized high-molecular-weight sterically hindered amine having a general formula I, the sterically hindered amine has the advantages of high molecular weight, difficult migration in polymer products, good thermal stability, etc., and can stabilize and/or be flame retardant to organic substances sensitive to light, heat or oxidation, and furthermore, can be made to have better compatibility with different types of polymer materials by changing substituents.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 8, 2022
    Applicant: BEIJING TIANGANG AUXILIARY CO., LTD.
    Inventors: Jingjing AN, Wei CHEN, Yongnian GAO, Jing LI, Gang LIU
  • Patent number: 10227491
    Abstract: The present invention is directed to fluorescent reactive dyes of general formula (I) a process for the production thereof and their use.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: March 12, 2019
    Assignee: DyStar Coulors Distribution GmbH
    Inventors: Clemens Grund, Yongnian Gao, Michael Sting-Rosen, Manfred Hoppe, Ulrich Hanxleden, Adrian Murgatroyd
  • Patent number: 9567464
    Abstract: The present invention refers to dyes of the formula (I) and mixtures thereof a process for their production and to their use.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 14, 2017
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Yongnian Gao, Si Sl Liew, Samuel Shantong Fu, Roxana Barbieru
  • Publication number: 20160280922
    Abstract: The present invention refers to dyes of the formula (1) and mixtures thereof a process for their production and to their use.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 29, 2016
    Inventors: Yongnian GAO, Si SI LIEW, Samuel SHANTONG FU, Roxana BARBIERU